Igniter for gasolene-engines.



B. 0. SMITH. IGNITER FOR GAsoLENB ENGINES. APPLIUATION FILED JAN. 3, 1910` Patented Dec.13,1910.

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13.0. SMITH. IGNITER FOR GASOLENE ENGINES.

APPLICATION FILED JAN. 3, 1910.

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BERNARD O. SMITH, F STANLEY, IOWA, ASSIGNOR 0E ONE-HALF TO S. C. IRVINE,

OF STANLEY, IOWA.

IGNITER FOR GASOLENE-ENGINES.

Speccaton of Letters Patent.

Patented Deo. 13, 1910.

Application led January 3, 1910. Serial No. 535,952.

To all whom it may concern:

Be it known that I, BERNARD O. SMITH, a

lcitizen of the United States of America, re-

siding at Stanley, in the county of Buchanan and State of Iowa, have invented certain new and useful Improvements in Igniters for Gasolene-Engines, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to igniters or sparkers for explosive engines, and the principal object of the same is to provide simple means for causing the fixed and the movable sparking points to be brought into contact intermittently by the operation of the engine.

In carrying out the objects of the invention generally stated above it will be understood, of course, that the essential features thereof are necessarily susceptible of changes in details and structural arrangements, one

preferred and practical embodiment of. which is shown in the accompanying drawings, wherein Figure 1 is a view in side elevation of an explosive engine equipped with the improved igniter. Fig. 2 is a view in elevation of the outer surface of the igniter block that is carried by the cylinder. Fig. 3 is a similar view of the inner surface of the igniter block. Fig. 4 is a vertical sectional view taken on the line 4 4, Fig. 3. Fig. 5 is a detail sectional view taken on tl e line 5-5, Fig. 1. l

In the accompanying drawings the improved sparking device has been shown applied to a horizontal engine, and referring to said drawings by numerals;"1 designates the usual bed of the engine which supports the cylinder 2 at one end. The top edge of the vertical sides of said bed carries upstanding bearings 3 for the main shaft 4 which has a crank connection 5 with the piston rod 6 of cylinder' 2. The usual fly wheel 7 is mounted upon said shaft 4 between the sides of the bed 1 and adjacent said fly wheel a small gear wheel 8 is mounted on shaft 4. A shaft 9 extends horizontally through the bed 1 below and slightly in advance of shaft 4, said shaft 9 having a larger gear 10 fast thereon that is in mesh with gear 8 of shaft 4. One end of shaft 9 projects beyond one side of bed 1 and has a cam 11 fast thereon. A hand lever 12 has a shaft 13 at its lower end, said shaft projecting laterally from the lower end of said lever and being extended through bearing opening 14 in one side of bed 1 to retain lever 12 within the bed. The outer end of shaft 13 carries an outwardly projecting reduced portion 15 that is eccentric to the outer end of said shaft and projects beyond the outer surface of the side of the bed in which it is mounted. A collar 16 is detachably mounted on said project-ion 15 and carries an arm 17 that normally projects toward cam 11, and has a tripping iin- ,ger 18 fastened thereto whose outer end is in the path of movement of cam 11 so that rotation of said cam will trip said finger to rock collar`16. A connecting arm 19 projects from collar 16 at substantially right angles to arm 17 and has its upper end connected to an elongated sparker operating rod' 20 whose outer end portion projects along one side of cylinder 2 and at its extreme end has a spring connection 21 with a bracket arm 22 projecting from the head of cylinder 2.

An opening .is formed through the side of cylinder 2 adjacent its outer end for the reception of an igniter block 23 having end fianges 24 adapted to be detachably fastened to said cylinder. A stationary electrode 25 projects through igniter block 23 and is insulated ther-efrom by the insulating bushing 26. The inner end of said elect-rode projects beyondl the inner surface of said block and is provided with an angular sparking point 27. A movable electrode 29 also passes transversely through said block 23 and is suitably spaced from fixed electrode 25. The inner end of said electrode 29 carries an angular sparkingA arm 30 adapted to contactv with sparking point 27 to produce a spark in a manner well understood. As will be understood electrode 29 is rotatably mounted in block 23 and to actuate the same its outer end has a rocking arm 31 detachably fastened thereon that normally hangs in a lpendent position across the outer end portion of rod 20, and has one end of a spring 32 bearing against it, said spring being coiled about rod 20 and having its other end Y bearing against an adjustable abutment block 33 mounted on said rod 20. Said spring 32 normally holds arm 31 in contact with a block 34 adjustably mounted on rod 20 as is shown more clearly in Fig. 1.

As is clearly shown in Fig. 1 gears 8 and 10, fly wheel 7 and hand lever 12 are practically inclosed by the sides or walls of bed o.'

l so that danger of accident from contact with the same is obviated.

In operation, the rotation of gear 8 will actuate gear l0 which carries with it cam 11 so that en each revolution of cam 1l inger 18 will rock arm 19 and cause rod 2O to actuate rocker arm 3l to make and break the circuit between sparking points 30-27. It will thus be seen that hand lever l2 may be normally rocked to withdraw tripping finger 1S out of the path of movement of cam 19 and simultaneously force the rod 20 rectilinearly so that the movable electrode 30 is held from the stationary electrod-e 27. It will also be understood that by means of the adjustable abutments carried by rod 20. the spring pressure upon rocker arm 3l may be regulated.

As will be obvious the pressure of spring 82 retains rocker arm in position so that when the engine is at rest the sparking points will be held separated.

IVhat I claim as my invention is l. A device of the charact-er described comprising an igniter block, a stationary electrode and a movable electrode projecting therethrough, a rocker arm carried by said movable electrode, a sparking rod7 spaced apart adjustable abutment blocks on said rod7 a spring interposed between said abutments and bearing against said rocker arm to hold the same in contact with one of said abntinents7 and means for siinultaiieously throwing said rocker arm rectilineai'ly and holding the movable electrode separated fi'om the stationary electrode.

2. In a device of the character described, the combination with an engine land its bed, of a cani shaft carried by said bed and operated by the engine, a cam on said shaft, a second shaft extending through said bed having a reduced eccentric projection on its outer terminal, a collar detaehably mounted on said projection and having an arm, the latter carrying a tripping iinger which is arranged in the path of movement of said cam7 a sparking rod actuated by said finger7 a stationary electrode, and a movable electrode, and means for simultaneously throwing said finger ont of the path of movenient of said cani and holding said movable electrode away from said stationary electrode.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

BERNARD O. SMITH.

Titnesses F. M. IRVINE, JEFF ALLEN. 

